AutoCodes – Nissan – P0103 2004 Nissan Altima Sedan

P0103 2004 Nissan Altima Sedan Code - Mass Air Flow Sensor Circuit High Input

Quick Answer

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0103 2004 Nissan Altima Sedan indicates Mass Air Flow Sensor Circuit High Input.
Common causes: Common causes include Dirty Air Filter, Dirty Mass Air Flow (MAF) Sensor, Intake air leaks.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,530

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 18, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0103 2004 Nissan Altima Sedan Description

The Mass Air Flow (MAF) sensor is placed in the stream of the intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM). The ECM controls the temperature of the hot film by a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the MAF Sensor Signal is more than the factory specifications.

OBDII Code P0103 2004 Nissan Altima Sedan - Mass Air Flow Sensor Circuit High Input - AutoCodes.com — P0103 2004 Nissan Altima Sedan Code - Mass Air Flow Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0103 2004 Nissan Altima Sedan?

Dirty Air Filter
Dirty Mass Air Flow (MAF) Sensor
Intake air leaks
Faulty Mass Air Flow Sensor
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P0103 2004 Nissan Altima Sedan?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Before replacing the Mass Air Flow (MAF) Sensor, try replacing the air filter and cleaning the Mass Air Flow Sensor with low compress air or Mass Air Flow Sensor Cleaner. Reset code and drive vehicle. If the code comes back, you must replace the Mass Air Flow Sensor to fix the problem.

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0103 2004 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0103 2004 Nissan Altima Sedan code?

Need more information on how to fix the P0103 2004 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0103 2004 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0103 2004 Nissan Altima Sedan Code

1. What are common symptoms of OBDII code P0103 in a 2004 Nissan Altima Sedan?

- Common symptoms include rough idling, engine stalling, poor acceleration, and a noticeable decrease in fuel efficiency.

2. What causes the OBDII code P0103 in a 2004 Nissan Altima Sedan?

- The most common cause of P0103 is a faulty mass air flow (MAF) sensor, which may be dirty, damaged, or malfunctioning.

3. How can I diagnose the mass air flow sensor circuit high input issue in my 2004 Nissan Altima Sedan?

- You can use a multimeter to test the MAF sensor's voltage output or visually inspect the sensor for any signs of damage or dirt accumulation.

4. Can a dirty air filter trigger the OBDII code P0103 in a 2004 Nissan Altima Sedan?

- Yes, a dirty air filter can disrupt the MAF sensor's readings and cause the circuit high input error code to trigger.

5. What is the recommended repair for OBDII code P0103 in a 2004 Nissan Altima Sedan?

- The typical repair involves cleaning or replacing the MAF sensor to ensure it accurately measures the airflow into the engine.

6. Are there any DIY tips for fixing the mass air flow sensor circuit high input issue in a 2004 Nissan Altima Sedan?

- You can try cleaning the MAF sensor using specialized cleaner spray or replacing the sensor yourself if you have the necessary tools and skills.

7. Can driving with the OBDII code P0103 in a 2004 Nissan Altima Sedan cause further damage?

- Continuing to drive with a faulty MAF sensor can lead to poor engine performance, reduced fuel efficiency, and potential damage to other engine components over time.

8. How much does it typically cost to repair the mass air flow sensor circuit high input issue in a 2004 Nissan Altima Sedan?

- The cost of repairing P0103 can vary depending on whether you clean or replace the MAF sensor, with prices ranging from $50 for cleaning to $200-$400 for a new sensor installation.

9. Will resetting the OBDII code P0103 in a 2004 Nissan Altima Sedan make it go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue with the MAF sensor is not addressed, the code is likely to reappear.

10. Can I pass an emissions test with the OBDII code P0103 showing on my 2004 Nissan Altima Sedan?

- No, having an unresolved OBDII code like P0103 will likely cause your vehicle to fail an emissions test until the issue is properly diagnosed and repaired.